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1997 BMW 540i 4.4L Poor Idle Quality, Misfire, MIL Lamp on
Posted to European Driveability on 12/2/2005 12 Replies

I have a 97 540 I with a 4.4 v8 which has a vacuum leak aparently under the plenum. I have replaced the intake gaskets and the pcv backplate. the throttle body gasket was also replaced. there is no detectable vacuum in the crankcase. When I spray carb cleaner ...

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Message Closed w/FIX

car Vehicle Data

1997 BMW 540i

VIN WBADE6323V
Engine4.4 L / 8 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursCold, Idle

Trouble Codes

27adaptive mixture adaptation idle limit reached cyl 5-8
35adaptive mixture adaptation idle limit reached cyl 1-4
67misfiring cyl 5
68misfiring cyl 6
69misfiring cyl 7
75total cutout misfire
Message Closed w/FIX

car Vehicle Data

1997 BMW 540i

VIN WBADE6323V
Engine4.4 L / 8 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire, MIL Lamp On
OccursCold, Idle

Trouble Codes

27adaptive mixture adaptation idle limit reached cyl 5-8
35adaptive mixture adaptation idle limit reached cyl 1-4
67misfiring cyl 5
68misfiring cyl 6
69misfiring cyl 7
75total cutout misfire